LFCanddennis zhuang
e395d77626
fix: re-scan stream-backed tables in recursive CTEs (#9039)
* fix: re-scan stream-backed tables in recursive CTEs
A recursive CTE re-executes its recursive term on every iteration, but
DfTableProviderAdapter hands StreamScanAdapter a single-use stream built at
planning time. The second iteration failed with "Stream already exhausted"
for every table served through DataSource::get_stream — information_schema,
pg_catalog, the computed entity-graph tables and numbers.
Keep that stream for the first execution and open a new one over the same
scan request for later executions.
Closes #9037
* refactor: drop redundant binding in stream factory
---------
(cherry picked from commit bb9b7e8778)
Signed-off-by: Dennis Zhuang <killme2008@gmail.com>
Co-authored-by: dennis zhuang <killme2008@gmail.com>
Sqlness Test
Sqlness manual
Case file
Sqlness has two types of file:
.sql: test input, SQL only.result: expected test output, SQL and its results
.result is the output (execution result) file. If you see .result files is changed,
it means this test gets a different result and indicates it fails. You should
check change logs to solve the problem.
You only need to write test SQL in .sql file, and run the test.
Case organization
The root dir of input cases is tests/cases. It contains several subdirectories stand for different test
modes. E.g., standalone/ contains all the tests to run under greptimedb standalone start mode.
Under the first level of subdirectory (e.g. the cases/standalone), you can organize your cases as you like.
Sqlness walks through every file recursively and runs them.
Kafka WAL
Sqlness supports Kafka WAL. You can either provide a Kafka cluster or let sqlness to start one for you.
To run test with kafka, you need to pass the option -w kafka. If no other options are provided, sqlness will use conf/kafka-cluster.yml to start a Kafka cluster. This requires docker and docker-compose commands in your environment.
Otherwise, you can additionally pass the your existing kafka environment to sqlness with -k option. E.g.:
cargo sqlness bare -w kafka -k localhost:9092
In this case, sqlness will not start its own kafka cluster and the one you provided instead.
Run the test
Unlike other tests, this harness is in a binary target form. You can run it with:
cargo sqlness bare
It automatically finishes the following procedures: compile GreptimeDB, start it, grab tests and feed it to
the server, then collect and compare the results. You only need to check if the .result files are changed.
If not, congratulations, the test is passed 🥳!